public class Robot extends Fragment{ @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.robot_layout, container, false); return view; } public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); Button button1 = (Button) getActivity().findViewById(R.id.robot_start); Button button2 = (Button) getActivity().findViewById(R.id.robot_create); button1.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent intent = new Intent(getActivity(), RobotActivity.class); startActivity(intent); } }); }}